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Diffstat (limited to 'Crypto/src/ocsp/OCSPReq.cs')
| -rw-r--r-- | Crypto/src/ocsp/OCSPReq.cs | 268 |
1 files changed, 268 insertions, 0 deletions
diff --git a/Crypto/src/ocsp/OCSPReq.cs b/Crypto/src/ocsp/OCSPReq.cs new file mode 100644 index 000000000..84808e50a --- /dev/null +++ b/Crypto/src/ocsp/OCSPReq.cs @@ -0,0 +1,268 @@ +using System; +using System.Collections; +using System.IO; + +using Org.BouncyCastle.Asn1; +using Org.BouncyCastle.Asn1.Ocsp; +using Org.BouncyCastle.Asn1.X509; +using Org.BouncyCastle.Crypto; +using Org.BouncyCastle.Security; +using Org.BouncyCastle.Security.Certificates; +using Org.BouncyCastle.Utilities; +using Org.BouncyCastle.X509; +using Org.BouncyCastle.X509.Store; + +namespace Org.BouncyCastle.Ocsp +{ + /** + * <pre> + * OcspRequest ::= SEQUENCE { + * tbsRequest TBSRequest, + * optionalSignature [0] EXPLICIT Signature OPTIONAL } + * + * TBSRequest ::= SEQUENCE { + * version [0] EXPLICIT Version DEFAULT v1, + * requestorName [1] EXPLICIT GeneralName OPTIONAL, + * requestList SEQUENCE OF Request, + * requestExtensions [2] EXPLICIT Extensions OPTIONAL } + * + * Signature ::= SEQUENCE { + * signatureAlgorithm AlgorithmIdentifier, + * signature BIT STRING, + * certs [0] EXPLICIT SEQUENCE OF Certificate OPTIONAL} + * + * Version ::= INTEGER { v1(0) } + * + * Request ::= SEQUENCE { + * reqCert CertID, + * singleRequestExtensions [0] EXPLICIT Extensions OPTIONAL } + * + * CertID ::= SEQUENCE { + * hashAlgorithm AlgorithmIdentifier, + * issuerNameHash OCTET STRING, -- Hash of Issuer's DN + * issuerKeyHash OCTET STRING, -- Hash of Issuers public key + * serialNumber CertificateSerialNumber } + * </pre> + */ + public class OcspReq + : X509ExtensionBase + { + private OcspRequest req; + + public OcspReq( + OcspRequest req) + { + this.req = req; + } + + public OcspReq( + byte[] req) + : this(new Asn1InputStream(req)) + { + } + + public OcspReq( + Stream inStr) + : this(new Asn1InputStream(inStr)) + { + } + + private OcspReq( + Asn1InputStream aIn) + { + try + { + this.req = OcspRequest.GetInstance(aIn.ReadObject()); + } + catch (ArgumentException e) + { + throw new IOException("malformed request: " + e.Message); + } + catch (InvalidCastException e) + { + throw new IOException("malformed request: " + e.Message); + } + } + + /** + * Return the DER encoding of the tbsRequest field. + * @return DER encoding of tbsRequest + * @throws OcspException in the event of an encoding error. + */ + public byte[] GetTbsRequest() + { + try + { + return req.TbsRequest.GetEncoded(); + } + catch (IOException e) + { + throw new OcspException("problem encoding tbsRequest", e); + } + } + + public int Version + { + get { return req.TbsRequest.Version.Value.IntValue + 1; } + } + + public GeneralName RequestorName + { + get { return GeneralName.GetInstance(req.TbsRequest.RequestorName); } + } + + public Req[] GetRequestList() + { + Asn1Sequence seq = req.TbsRequest.RequestList; + Req[] requests = new Req[seq.Count]; + + for (int i = 0; i != requests.Length; i++) + { + requests[i] = new Req(Request.GetInstance(seq[i])); + } + + return requests; + } + + public X509Extensions RequestExtensions + { + get { return X509Extensions.GetInstance(req.TbsRequest.RequestExtensions); } + } + + protected override X509Extensions GetX509Extensions() + { + return RequestExtensions; + } + + /** + * return the object identifier representing the signature algorithm + */ + public string SignatureAlgOid + { + get + { + if (!this.IsSigned) + return null; + + return req.OptionalSignature.SignatureAlgorithm.ObjectID.Id; + } + } + + public byte[] GetSignature() + { + if (!this.IsSigned) + return null; + + return req.OptionalSignature.SignatureValue.GetBytes(); + } + + private IList GetCertList() + { + // load the certificates if we have any + + IList certs = Platform.CreateArrayList(); + Asn1Sequence s = req.OptionalSignature.Certs; + + if (s != null) + { + foreach (Asn1Encodable ae in s) + { + try + { + certs.Add(new X509CertificateParser().ReadCertificate(ae.GetEncoded())); + } + catch (Exception e) + { + throw new OcspException("can't re-encode certificate!", e); + } + } + } + + return certs; + } + + public X509Certificate[] GetCerts() + { + if (!this.IsSigned) + return null; + + IList certs = this.GetCertList(); + X509Certificate[] result = new X509Certificate[certs.Count]; + for (int i = 0; i < certs.Count; ++i) + { + result[i] = (X509Certificate)certs[i]; + } + return result; + } + + /** + * If the request is signed return a possibly empty CertStore containing the certificates in the + * request. If the request is not signed the method returns null. + * + * @return null if not signed, a CertStore otherwise + * @throws OcspException + */ + public IX509Store GetCertificates( + string type) + { + if (!this.IsSigned) + return null; + + try + { + return X509StoreFactory.Create( + "Certificate/" + type, + new X509CollectionStoreParameters(this.GetCertList())); + } + catch (Exception e) + { + throw new OcspException("can't setup the CertStore", e); + } + } + + /** + * Return whether or not this request is signed. + * + * @return true if signed false otherwise. + */ + public bool IsSigned + { + get { return req.OptionalSignature != null; } + } + + /** + * Verify the signature against the TBSRequest object we contain. + */ + public bool Verify( + AsymmetricKeyParameter publicKey) + { + if (!this.IsSigned) + throw new OcspException("attempt to Verify signature on unsigned object"); + + try + { + ISigner signature = SignerUtilities.GetSigner(this.SignatureAlgOid); + + signature.Init(false, publicKey); + + byte[] encoded = req.TbsRequest.GetEncoded(); + + signature.BlockUpdate(encoded, 0, encoded.Length); + + return signature.VerifySignature(this.GetSignature()); + } + catch (Exception e) + { + throw new OcspException("exception processing sig: " + e, e); + } + } + + /** + * return the ASN.1 encoded representation of this object. + */ + public byte[] GetEncoded() + { + return req.GetEncoded(); + } + } +} |